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version 1.69, 2018/08/14 00:25:35 version 1.70, 2019/04/11 00:13:16
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         <b>RETGUARD</b> is a replacement for the <b>stack-protector</b>          <b>RETGUARD</b> is a replacement for the <b>stack-protector</b>
         which uses a per-function random cookie (located in the ELF          which uses a per-function random cookie (located in the read-only ELF
         <b>.openbsd.randomdata</b> section) to consistency check the          <b>.openbsd.randomdata</b> section) to consistency-check the
         return address on the stack.  Implemented for AMD64 and ARM64          return address on the stack.  Implemented for AMD64 and ARM64
         by Todd Mortimer in OpenBSD 6.4.          by Todd Mortimer in OpenBSD 6.4.
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